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| Number | Title | Issue Date |
| 7941997 | Compact-folded article and pouch A personal care article (20) has a longitudinal-direction (22), a relatively shorter, lateral cross-direction (24), a first end-section (72), a second end-section (72a), and an intermediate-section (76) which is conti... | 05/17/2011 |
| 7325507 | Tiller operated marine steering system A tiller-based watercraft steering system is responsive to tiller release to lock a watercraft's steered element in the last commanded position upon tiller release. The system is locked by closing a valve assembly to prevent flow to opposed chamber of a hydraulic lo... | 02/05/2008 |
| 6923289 | Closed circuit steering circuit for mobile vehicles A closed-circuit pump is provided that receives input from a steering unit in order to drive a steering cylinder. The closed-circuit pump is preferably a proportional bi-directional pump. The steering unit includes a steering wheel or similar device controlled by an... | 08/02/2005 |
| 6804956 | Hydraulic steering system A hydraulic steering system (1) with a supply connection arrangement, having a high-pressure connection (P) and a low-pressure connection (T), and with a working connection arrangement (L, R), a directional valve (2) and a metering pump unit (3, 4 | 10/19/2004 |
| 6490861 | Hydraulic steering system A hydraulic steering system for a tractor is provided which can be operated in a conventional steering mode or in a fast steering mode. In conventional steering mode, a conventional steering wheel and steering motor direct pressurized oil to the steerable... | 12/10/2002 |
| 6438950 | Hydraulic steering arrangement Hydraulic steering arrangement (15) with a steering handwheel (2), which is connected with a manual. pump (3), a pump (18) supplying hydraulic fluid, a steering motor (12) and a steering valve (15) arranged between pump (18) and steering motor (12) and ha... | 08/27/2002 |
| 5857488 | Multi-mode selector valve assembly for marine steering system A hydraulic valve apparatus is for controlling pressurized fluid flow to at least a pair of coupled hydraulic actuators in response to operator signals. The valve apparatus comprises a main body having main ports communicating selectively with a fluid sup... | 01/12/1999 |
| 5682744 | Directional control valve in a full hydraulic type steering control system A full hydraulic type steering control system is provided with a steering control valve for outputting a flow of a pressurized discharge fluid of a hydraulic pump in proportion to an amount of steering at a steering wheel, and a directional control valve ... | 11/04/1997 |
| 5497692 | Electrohydraulic steering system An electrohydraulic steering system has a pair of proportional valves for controlling displacement of a steering valve for normal steering functions. The proportional valves are selectively energized by a position sensor in response to rotation of a steer... | 03/12/1996 |
| 5481871 | Hydraulic steering system with spool pressure equalization A lock valve apparatus and a hydraulic system incorporating a lock valve apparatus including a lock valve body with a bore, a first port, a second port, a third port and a fourth port. There is a spool valve with a valve spool reciprocatingly received in ... | 01/09/1996 |
| 5471907 | Marine steering apparatus A fluid power apparatus is connected to a pressurized fluid supply and a conventional helm pump controlled by the helm of a vessel to shift the rudder. The apparatus comprises an actuator cylinder connectable to the rudder, and a servo cylinder and a main... | 12/05/1995 |
| 5427045 | Steering cylinder with integral servo and valve A power steering apparatus for a marine craft includes an actuator assembly including a hydraulic steering actuator. The steering actuator is operatively connected to the tiller of the craft. A hydraulic servo actuator is mounted on the steering actuator.... | 06/27/1995 |
| 5409410 | Hydraulic steering arrangement, in particular for boats Hydraulic steering arrangement, comprising a first hydraulic pump connected to a steering wheel, a piston cylinder device hydraulically coupled to the first hydraulic pump and arranged for connection to a steering mechanism, a second hydraulic pump and a ... | 04/25/1995 |
| 5349818 | Low deadband marine hydraulic steering system A lock valve for marine hydraulic steering systems includes a valve body with a spool valve reciprocatingly received in a bore therein. A first port and a second port of the valve are connected to a manual pump. A third port and fourth port are connected ... | 09/27/1994 |
| 5289756 | Marine steering apparatus A fluid power apparatus is connected to a pressurized fluid supply and a conventional helm pump controlled by the helm of a vessel to shift the rudder. The apparatus comprises an actuator cylinder connectable to the rudder, and a servo cylinder and a main... | 03/01/1994 |
| 5042250 | High-back pressure power steering device A hydrostatic power steering device is disclosed, which may be either a fluid controller (15) or a torque generator 111. The device is of the type including a housing (19;135) defining a fluid inlet port (29;113) and a return port (31;115). The device inc... | 08/27/1991 |
| 4884647 | Rear wheel steering apparatus A rear wheel steering hydraulic cylinder is arranged in a rear wheel steering apparatus to steer rear wheels to the right and left. When a front wheel steering angle detected by a front wheel steering angle sensor exceeds a predetermined value, the hydrau... | 12/05/1989 |
| 4878557 | Auxiliary steering system for wheeled vehicle In addition to a conventional steering system for steering a vehicle through the front wheels in accordance with an angular displacement of the steering wheel, the vehicle is equipped with a negative feedback steering control system which steers the vehic... | 11/07/1989 |
| 4640094 | Flow amplifying steering system A power steering system having a hydraulic motor driven by fluid flow from a hand operated pump and a main pump. The hand pump provides input to a control valve which amplifies fluid flow to the hydraulic motor, with fluid from the main pump, in proportio... | 02/03/1987 |
| 4620416 | Load sensing system An improved fluid controller (17) is disclosed of the type for use in a load sensing hydrostatic steering system. The system includes a load sensing priority flow control valve (15) of the type which operates on a dynamic load signal. The controller inclu... | 11/04/1986 |
| 4548035 | Hydraulic control apparatus for a servomotor The invention relates to a steering control unit for a bidirectional servomotor which is connectable to steerable wheels. A steering wheel controlled quantity setting unit of a known type has ports connectable to a pump and a return tank and two control p... | 10/22/1985 |
| 4463819 | Hydraulic control valve An improved hydraulic control valve is disclosed for providing the metering of fluid to a steering arrangement such as that normally employed on a motorized vehicle. The steering arrangement includes a piston-cylinder assembly, a main pump for supplying p... | 08/07/1984 |
| 4424672 | Hydraulic power steering system A hydraulic power steering system has a steering valve which operates in accordance with steering input signals generated by a steering wheel operated metering pump and follow-up signals generated by a pair of follow-up cylinders to effect a desired turn.... | 01/10/1984 |
| 4405030 | Steering system and compensating valve A hydrostatic power steering control system with variable feedback compensation employing a unique compensating valve. The steering control system includes first and second hydraulic cylinders, each having two internal chambers denoted as head and feedbac... | 09/20/1983 |
| 4367803 | Steering system A hydrostatic power steering system with constant volume feedback compensation including first and second steering cylinders. Each cylinder has a housing containing a piston with an attached piston rod extending through one end of the housing. The pistons... | 01/11/1983 |
| 4311006 | Pressure compensated steering system In a pressure compensated steering valve, the effect of an input steering signal is cancelled by connecting the spool valve actuator to the reservoir. A shiftable spool valve is acted upon by end cap actuators, which are in turn controlled by a hand pump ... | 01/19/1982 |
| 4161865 | Steering control with hydraulic follow-up A steering control with a hydraulic follow-up wherein a movable valve member of a control valve is automatically brought back to a nonsteering disposition as a result of the movement of the device being steered to the desired steering position. Movement o... | 07/24/1979 |
| 4065921 | Hydraulic control means, particularly for vehicle steering means The invention relates to a hydraulic control unit for a servomotor of the type used for vehicle steering systems. The unit has a control circuit with a power operated pump and a hand operated metering motor and an operating circuit with a power operated p... | 01/03/1978 |
| 4023363 | Auxiliary power steering systems for heavy duty vehicles Dual double acting servomotors hydraulically pressurized are provided wherein the pistons have shunt valve means actuatable at limit of movement of the pistons to shunt high pressure fluid at one side of the piston to the low pressure side of the piston t... | 05/17/1977 |
| 4003202 | Variable feedback steering system A hydraulic control circuit for the steering system of an articulated vehicle is provided having a first pump means for delivering fluid under pressure and directional control valve means in fluid communication with the first pump means for controlling th... | 01/18/1977 |
| 3938331 | Hydrostatic servomechanism with artificial feedback A hydrostatic servomechanism adapted for controlling the direction of vehicles and selfpropelled machines. The servomechanism has a power circuit including a servopump, a distributor with reset mechanism, and a servomotor and a control circuit with a meas... | 02/17/1976 |
